2010 Cadillac Truck SRX FWD V6-3.0L Page 1481
* DTCs P0341, P0346, P0366, and P0391 are Type B DTCs.
* The camshaft position actuator is commanded to the Home or Parked position.
* The ignition system defaults to a failed camshaft position sensor based on the crankshaft position sensor.
Conditions for Clearing the MIL/DTC
* DTCs P0341, P0346, P0366, and P0391 are Type B DTCs.
* With a DTC set, the engine may crank for an extended period of time at start-up.
Diagnostic Aids
* With a DTC set, the engine may crank for an extended period of time at start-up.
* The cylinder 1 intake camshaft position sensor is used for injector and ignition system synchronization. A stalling condition will occur if the
CMP sensor signal is intermittent and a DTC will not set. Inspect all cylinder 1 intake camshaft position sensor circuits for poor connections.
Reference Information
Schematic Reference
Engine Controls Schematics (LAU) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics
(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)
Description and Operation
Electronic Ignition System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Electronic
Ignition System Description)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Engine Control Module Scan Tool Information (LF1,LFW) (See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Scan Tool Testing and Procedures)Engine Control Module Scan Tool Information (LAU) (See: Powertrain Management/Computers
and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures) for scan tool information
Circuit/System Verification
1. If DTC P0340, P0345, P0365, or P0390 are also set, diagnose those DTCs first
2. With the ignition OFF, inspect the engine wiring harnesses carrying the B23 camshaft position sensor circuits for the following conditions:
* Close routing of aftermarket electrical equipment
* Close to solenoids, motors, and relays
瀚慍orrect any wire harness routing or component placement conditions if it is determined to be a possible source of electrical interference.
3. Observe the following scan tool parameters are all incrementing:
* Exhaust Camshaft Position Active Counter Bank 1
* Intake Camshaft Position Active Counter Bank 1
* Exhaust Camshaft Position Active Counter Bank 2
* Intake Camshaft Position Active Counter Bank 2
4. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the
conditions that you observed from the Freeze Frame/Failure Records data.
Circuit/System Testing
